UE 5.1.1 Android Quick Start Trouble

General Tutorial & Course Discussions
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I was following the steps in these links:

After following the steps I try to launch to my device and get the following errors (I believe this is gradle packaging?):

LogPlayLevel: UAT: > Task :app:compileDebugJavaWithJavac
LogPlayLevel: UAT: The following annotation processors are not incremental: lifecycle-compiler-2.0.0.jar (androidx.lifecycle:lifecycle-compiler:2.0.0).
LogPlayLevel: UAT: Make sure all annotation processors are incremental to improve your build speed.
LogPlayLevel: Error: UAT: Z:\app\src\main\java\com\epicgames\unreal\GameActivity.java:194: error: cannot find symbol
LogPlayLevel: UAT: import com.epicgames.unreal.DownloadShim;
LogPlayLevel: UAT: ^
*LogPlayLevel: UAT: *
LogPlayLevel: UAT: symbol: class DownloadShim
LogPlayLevel: UAT: > Task :app:compileDebugJavaWithJavac FAILED
LogPlayLevel: UAT: location: package com.epicgames.unreal
LogPlayLevel: UAT: 1 error
*LogPlayLevel: UAT: *
LogPlayLevel: UAT: FAILURE: Build failed with an exception.
*LogPlayLevel: UAT: *
LogPlayLevel: UAT: * What went wrong:
LogPlayLevel: UAT: Execution failed for task ‘:app:compileDebugJavaWithJavac’.
LogPlayLevel: UAT: > Compilation failed; see the compiler error output for details.
*LogPlayLevel: UAT: *
LogPlayLevel: UAT: * Try:
LogPlayLevel: UAT: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
*LogPlayLevel: UAT: *
LogPlayLevel: UAT: * Get more help at https://help.gradle.org
*LogPlayLevel: UAT: *
LogPlayLevel: UAT: BUILD FAILED in 19s
LogPlayLevel: UAT: 32 actionable tasks: 1 executed, 31 up-to-date
LogPlayLevel: Error: UAT: ERROR: cmd.exe failed with args /c “C:\Users\wblac\Documents\Unreal Projects\AndroidQuickStart\Intermediate\Android\arm64\gradle\rungradle.bat” :app:assembleDebug
LogPlayLevel: UAT: (see C:\Users\wblac\AppData\Roaming\Unreal Engine\AutomationTool\Logs\C+Program+Files+Epic+Games+UE_5.1\Log.txt for full exception trace)
LogPlayLevel: UAT: AutomationTool executed for 0h 0m 54s
LogPlayLevel: UAT: AutomationTool exiting with ExitCode=1 (Error_Unknown)
LogPlayLevel: Completed Launch On Stage: Launch Task, Time: 55.634580
LogPlayLevel: UAT: BUILD FAILED
PackagingResults: Error: Launch failed! Unknown Error

I can’t upload attachments as a new user but here is some more information:

Android Studio 4.0 has Installed:
SDK Platforms: 26-32
SDK Tools:
Android SDK Build-Tools: 32.0.0, 30.0.3, 29.0.2
NDK: 25.1.8937393
Android SDK Command-line Tools: 8.0

My environment variables:
ANDROID_HOME: C:\Users\wblac\AppData\Local\Android\Sdk
ANDROID_SDK_HOME: C:\Users\wblac\AppData\Local\Android\Sdk
JAVA_HOME: C:\Program Files\Android\Android Studio\jre
NDK_ROOT: C:\Users\wblac\AppData\Local\Android\Sdk\ndk\25.1.8937393
NDLROOT: C:\Users\wblac\AppData\Local\Android\Sdk\ndk\25.1.8937393

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2

I am still stuck on this if anyone has any suggestions.

I tried wiping and starting over, tried on another PC. Still get to the same error.

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3

the same problem here

4

Hello,
Can you try the following steps?

  1. Open the Project Settings and check “Platform - Android” > “Android Package Name”
  2. If it begins with “com.EpicGames” like com.EpicGames.AndroidQuickStart, replace “EpicGames” part with something like “YourCompany” or make it lower case (com.epicgames)

image
image1044×129 12.8 KB

  1. Go to your project folder and delete Intermediate/Android folder to clear everything once for sure
  2. Connect your Android devices to your PC
  3. Try Quick Launch as the Android Quick Start document explains

I hope this would help you!
Thanks

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5

Was getting similar error, after deleting intermediats/Android - now I get a little farther with:

LogPlayLevel: Error: UAT: ERROR:Z:\app\build\intermediates\javac\debug\classes\com\epicgames\unreal\GameActivity$41.class: D8: java.lang.NullPointerException: Cannot invoke “String.length()” because “” is null
Log

6

OMG… I eventually got it to launch on device after endless tweaking of the NDK/JDK settings

Specifically I used Android/Android Studio/jbr
as the location of JAVA

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